2Zr-Fe Engine Control. Dtc P1603 Engine Stall History

After starting the engine, this DTC is stored when the engine stops without the ignition switch being operated.
Using the Techstream, the conditions present when the DTC was stored can be confirmed by referring to the freeze frame data. Freeze frame data records engine conditions when a malfunction occurs. This information can be useful when troubleshooting.
It is necessary to check if the vehicle has ran out of fuel before performing troubleshooting, as this DTC is also stored when the engine stalls due to running out of fuel.

DTC No.	DTC Detection Condition	Trouble Area
P1603	After monitoring for startability problems (P1604) finishes and 5 seconds or more elapse after starting the engine, with the engine running, the engine stops (the engine speed drops to 200 rpm or less) without the ignition switch being operated for 0.5 seconds or more (1 trip detection logic).	Air leak in intake system Purge VSV Brake booster Mass air flow meter sub-assembly Engine coolant temperature sensor Thermostat Power supply circuit (purge VSV, air fuel ratio sensor, fuel injector assembly, ignition coil assembly) Fuel pump Fuel pump control circuit Fuel line PCV valve and hose Camshaft timing oil control valve assembly Knock control sensor Ignition system Air conditioning system Power steering system Electrical load signal system Charging system A/T system Park/Neutral position switch assembly ECM Wire harness or connector Immobiliser system

P1605

This DTC is stored if the engine speed drops below the set speed.
Using the Techstream, the conditions present when the DTC was stored can be confirmed by referring to the freeze frame data. Freeze frame data records engine conditions when a malfunction occurs. This information can be useful when troubleshooting.
It is necessary to check if the vehicle ran out of fuel before performing troubleshooting, as this DTC is also stored when idling is unstable due to running out of fuel.

DTC No.	DTC Detection Condition	Trouble Area
P1605	After 5 seconds or more elapse after starting the engine, with the engine running, the engine speed drops to 400 rpm or less (1 trip detection logic).	Air leak in intake system Purge VSV Brake booster Mass air flow meter sub-assembly Engine coolant temperature sensor Thermostat Power supply circuit (purge VSV, air fuel ratio sensor, fuel injector assembly, ignition coil assembly) Fuel pump Fuel pump control circuit Fuel line PCV valve and hose Camshaft timing oil control valve assembly Knock control sensor Ignition system Air conditioning system Power steering system Electrical load signal system Charging system A/T system1 Park/Neutral position switch assembly1 ECM Wire harness or connector

*1: for Automatic transaxle models

Reference waveforms showing a normal cold engine start

Corolla. Zre142 Aze141.2Zr-Fe Engine Control.Sfi System.
Dtc
P1603 Engine Stall History

Reference waveforms showing a normal warm engine start

Reference values when there is an air leak in the intake system during rough idling

Freeze Frame Data P1605 Rough Idling
Engine
Current	P1605: Rough Idling
	Time Freeze Frame Data
	Item	Data1	Data2	Data3	Data4	Data5	Unit
	Engine Speed	647	649	586	378	182	rpm
	Calculate Load	26.2	26.2	29.1	42.6	58.6	%
	Vehicle Load	11.7	11.7	12.1	48.7	61.2	%
	MAF	2.87	2.87	2.87	6.23	3.04	gm/s
	Atmosphere Pressure	-0	-0	-0	-0	-0	psi (gauge)
	Coolant Temp	86	86	86	86	86	°C
	Intake Air	43	43	43	43	43	°C
	Battery Voltage	13.515	13.515	13.264	12.892	12.792	V
	Throttle Sensor Volt %	14.5	14.5	14.5	16.8	17.2	%
	Throttl Sensor #2 Volt %	46.2	46.2	46.2	48.4	49.2	%
	Throttle Sensor Position	0.0	0.0	0.0	0.0	0.0	%
	Throttle Motor DUTY	14.5	14.5	14.5	17.2	17.2	%
	Injector (Port)	2159	2161	2148	2190	2190	μs
	Injection Volume (Cylinder 1)	0.093	0.093	0.093	0.095	0.095	ml
	Fuel Pump/Speed Status	ON	ON	ON	ON	ON
	EVAP (Purge) VSV	13.3	13.3	13.3	13.3	13.3	%
	Evap Purge Flow	2.9	2.9	2.9	3.2	3.2	%
	Purge Density Learn Value	0.891	0.891	0.891	0.891	0.891
	EVAP System Vent Valve	OFF	OFF	OFF	OFF	OFF
	EVAP Purge VSV	OFF	OFF	OFF	OFF	OFF
	Purge Cut VSV Duty	8.5	8.5	8.5	8.5	8.5	%
	Target Air-Fuel Ratio	0.998	0.998	0.998	0.998	0.998
	AF Lambda B1S1	0.999	0.997	1.001	1.038	1.118
	AFS Voltage B1S1	3.258	3.242	3.284	3.521	3.715	V
	O2S B1S2	0.740	0.740	0.740	0.740	0.740	V
	Short FT #1	-1.563	-1.563	-1.563	-1.563	-1.563	%
	Long FT #1	6.250	6.250	6.250	6.250	6.250	%
	Total FT #1	0.054	0.054	0.054	0.054	0.054
	Fuel System Status #1	CL	CL	CL	CL	CL
	IGN Advance	22.0	22.0	22.5	23.5	23.5	Deg
	Knock Feedback Value	-1.5	-1.5	-1.5	-1.5	-1.5	deg(CA)
	Knock Correct Learn Value	17.0	17.0	17.0	17.0	17.0	deg(CA)
	Starter Signal	Close	Close	Close	Close	Close
	Ambient Temperature	21	21	21	21	21	°C

WIRING DIAGRAM

Refer to DTC P0351 for ignition coil assembly circuit (COROLLA_ZRE142 RM000000XH40QYX_07.html).
Refer to DTC P2195 for air fuel ratio sensor circuit (COROLLA_ZRE142 RM000000WC40PCX_07.html).
Refer EVAP System for purge VSV circuit (except Mexico models) (COROLLA_ZRE142 RM0000011IO03FX_08.html).
Refer to Fuel Pump Control Circuit (COROLLA_ZRE142 RM0000027680A7X_02.html).
Refer to Fuel Injector Circuit (COROLLA_ZRE142 RM000000ZRM0FVX_02.html).

INSPECTION PROCEDURE

HINT:

In contrast to normal malfunction diagnosis for components, circuits and systems, DTCs P1603 and P1605 are used to determine the malfunctioning area from the problem symptoms and freeze frame data when the user mentions problems such as engine stall.
As these DTCs can be stored as a result of certain user actions, even if these DTCs are output, if the customer makes no mention of problems, clear these DTCs without performing any troubleshooting and return the vehicle to the customer.
If any other DTCs are output, perform troubleshooting for those DTCs first.

Use any information from the customer problem analysis about the condition of the vehicle at the time when the problem occurred (how the engine stopped, conditions when the engine was restarted, etc.) as a reference.

Symptom	Suspected Area
Engine vibration occurs and engine stops	Air-fuel ratio abnormal
Engine stops with no engine vibration	Ignition system, injection stoppage, high load from external parts
Engine can be started with accelerator pedal depressed	Insufficient air volume
Rough idling after engine started	Air-fuel ratio abnormal, abnormal combustion

Read freeze frame data using the Techstream. Freeze frame data records engine conditions when a malfunction occurs. This information can be useful when troubleshooting.
When confirming the freeze frame data, be sure to check all 5 sets of freeze frame data (COROLLA_ZRE142 RM000000PDS0TTX.html).
When DTC P1603 (Engine Stall History) is stored, DTC P1605 (Rough Idling) is also stored. When confirming freeze frame data, check DTC P1605. The ECM stores DTC P1605 first. Therefore, 5 sets of freeze frame data can be confirmed through DTC P1605, enabling the technician to obtain more information.
When confirming freeze frame data, if there are multiple items related to the cause of the malfunction, perform troubleshooting for all related items.
Try to operate the vehicle under the conditions recorded in the freeze frame data which were present when the malfunction occurred. Confirm the data at this time and the data when the engine is idling (engine warmed up and no load) and compare these data with the freeze frame data.
Inspections take into account the fact that the malfunction may not have reoccurred and place emphasis on checking the vehicle conditions present at the time when the malfunction occurred.
When performing inspections, jiggle the relevant wire harnesses and connectors in an attempt to reproduce malfunctions that do not always occur.

Inspection flow:: Using freeze frame data, narrow down the parts to be inspected according to the vehicle conditions at the time when the malfunction occurred.

P1603:

If the engine stalled when the intake air volume was low (during idling or deceleration), there may be a decrease in torque due to an incorrect air fuel ratio, etc.
If the engine stalled when the intake air volume was high (during driving or acceleration), there may be a major malfunction such as continuous misfire due to ignition stoppage, fuel injection stoppage, etc. and the torque drops to zero.

If the engine speed decreased slowly, there may have been a decrease in torque due to an air fuel ratio that was incorrect (by approximately 20 to 30%), etc.
If the engine speed decreased rapidly, there may have been a malfunction such as when the engine misfires almost continuously due to ignition stoppage, fuel injection stoppage, etc., or when the external load increases due to an external part malfunctioning.

If the air fuel ratio is abnormal, there may have been an intake air leak, sensor malfunction, or fuel supply problem.
If the vehicle was normal, the air volume may have been insufficient or the ignition timing may have been incorrect.

P1603 inspection flow: Narrow down the parts to be inspected according to the vehicle conditions at the time when the malfunction occurred (freeze frame data).

Vehicle State	Engine Speed	Suspected Area		Primary Parts to Inspect	Procedure
Idling or decelerating	Slowly decreases and engine stalls	Ignition system abnormal	Igniter abnormal	Power supply circuit Ignition coil assembly Spark plug	10, 38, 52
		Air fuel ratio abnormal	Air suction	Intake system connections Purge VSV system Brake booster	5 to 9
			Sensor malfunction (value from sensor too lean)	Mass air flow meter sub-assembly Engine coolant temperature sensor Air fuel ratio sensor system Thermostat	11 to 23
			Sensor malfunction (value from sensor too rich)		39 to 51
			Fuel supply problem	Fuel pump control circuit Purge VSV system Fuel line ECM	24 to 37
		Intake air volume insufficient	Problem with air passage	Intake system connections Mass air flow meter sub-assembly Brake booster PCV valve and hose Purge VSV system	53 to 55
		Intake air volume insufficient	Excessive valve overlap	Camshaft timing oil control valve assembly	56 to 59
		Ignition timing incorrect	Does not operate as expected	Knock control sensor Engine coolant temperature sensor Mass air flow meter sub-assembly	60 to 64
	Rapidly decreases and engine stalls	Ignition and injection stops (electrical system malfunction)	Power temporarily cut	Power supply circuit (fuel injector assembly, ignition coil assembly)	65, 66
	Rapidly decreases and engine stalls	External part malfunctioning	Increase in load	Air conditioning system Electrical load signal system Power steering system A/T system Park/Neutral position switch assembly	67 to 69
Accelerating	-	Crankshaft position sensor or VVT sensor malfunction	Power temporarily cut	Check DTCs	1
		Mass air flow meter sub-assembly	Foreign matter adhesion	Mass air flow meter sub-assembly	71 to 74
		Ignition and injection stops (electrical system malfunction)	Power temporarily cut	Power supply circuit (fuel injector assembly, ignition coil assembly)	75, 76
		Fuel supply problem	Fuel leak, clog	Fuel pump control circuit Fuel line	77 to 81

P1605:

If the engine speed decreased slowly, there may have been a decrease in torque due to an air fuel ratio that was incorrect (by approximately 20 to 30%), etc.
If the engine speed decreased rapidly, there may have been a malfunction such as when the engine misfires almost continuously due to ignition stoppage, fuel injection stoppage, etc., or when the external load increases due to an external part malfunctioning.

If the air fuel ratio is abnormal, there may have been an intake air leak, sensor malfunction, or fuel supply problem.
If the vehicle was normal, the air volume may have been insufficient or the ignition timing may have been incorrect.

P1605 inspection flow: Narrow down the parts to be inspected according to the vehicle conditions at the time when the malfunction occurred (freeze frame data).

Engine Speed	Suspected Area		Primary Parts to Inspect	Procedure
Slowly decreases	Ignition system abnormal	Igniter abnormal	Power supply circuit Ignition coil assembly Spark plug	10, 38, 52
	Air fuel ratio abnormal	Air suction	Intake system connections Purge VSV system Brake booster	5 to 9
		Sensor malfunction (value from sensor too lean)	Mass air flow meter sub-assembly Engine coolant temperature sensor Air fuel ratio sensor system Thermostat	11 to 23
		Sensor malfunction (value from sensor too rich)		39 to 51
		Fuel supply problem	Fuel pump control circuit Purge VSV system Fuel line ECM	24 to 37
	Intake air volume insufficient	Problem with air passage	Intake system connections Mass air flow meter sub-assembly Brake booster PCV valve and hose Purge VSV system	53 to 55
	Intake air volume insufficient	Excessive valve overlap	Camshaft timing oil control valve assembly	56 to 59
	Ignition timing incorrect	Does not operate as expected	Knock control sensor Engine coolant temperature sensor Mass air flow meter sub-assembly	60 to 64
Rapidly decreases	Ignition and injection stops (electrical system malfunction)	Power temporarily cut	Power supply circuit (fuel injector assembly, ignition coil assembly)	65, 66
Rapidly decreases	External part malfunctioning	Increase in load	Air conditioning system Electrical load signal system Power steering system A/T system1 Park/Neutral position switch assembly1	67 to 70

*1: for Automatic transaxle models

NOTICE:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

1.CHECK FOR ANY OTHER DTCS OUTPUT

Connect the Techstream to the DLC3.

Turn the ignition switch to ON.

Turn the Techstream on.

Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

Read the DTCs (COROLLA_ZRE142 RM000000PDK0ZAX.html).

Result
Result
Proceed to
Only DTC P1603 and/or P1605 is output
A
DTC and other DTCs P1603 and/or P1605 are output
B
HINT:
If any DTCs other than P1603 or P1605 are output, troubleshoot those DTCs first.

GO TO DTC CHART (COROLLA_ZRE142 RM000000PDF0G8X.html)

A

2.CHECK FREEZE FRAME DATA

Connect the Techstream to the DLC3.

Turn the ignition switch to ON.

Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (COROLLA_ZRE142 RM000000PDS0TTX.html).
OK:
Immobiliser Fuel Cut is OFF.

Result
Result
Proceed to
Abnormal
A
Normal
B

Go to step 4

A

3.CHECK ENGINE IMMOBILISER SYSTEM

Connect the Techstream to the DLC3.

Start the engine.

Idle the engine

Enter the following menus: Powertrain / Engine and ECT / Data List / Immobiliser Communication and Immobiliser Fuel Cut.

Check the Data List indication.

Standard
Data List Item
Standard
Immobiliser Communication
ON
Immobiliser Fuel Cut
OFF

Result
Result
Proceed to
OK
A
NG (w/ smart key system)
B
NG (w/o smart key system)
C

Standard
Data List Item	Standard
Immobiliser Communication	ON
Immobiliser Fuel Cut	OFF

CHECK ENGINE IMMOBILISER SYSTEM (COROLLA_ZRE142 RM000000QY40ALX.html)

CHECK ENGINE IMMOBILISER SYSTEM (COROLLA_ZRE142 RM000001GUQ043X.html)

A

4.READ FREEZE FRAME DATA

Connect the Techstream to the DLC3.

Turn the ignition switch to ON.

Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (COROLLA_ZRE142 RM000000PDS0TTX.html).

Result
Problem Symptom	Freeze Frame Data Item for DTC P1605			Suspected Area	Proceed to
Problem Symptom	Closed Throttle Position SW	Engine Speed	Total of Short FT and Long FT	Suspected Area	Proceed to
When idling or decelerating, engine speed slowly decreases (and engine stalls)	All 5 sets of freeze frame data are ON	Decreases slowly*1	All 5 sets of freeze frame data are +15% or more*2	Air suction Sensor malfunction (value from sensor too lean) Fuel supply problem	A
			At least 1 of the 5 sets of freeze frame data is -15% or less*3	Sensor malfunction (value from sensor too rich)	B
			All 5 sets of freeze frame data are from -15% to +15%	Intake air volume insufficient Ignition timing incorrect	C
When idling or decelerating, engine speed rapidly decreases (and engine stalls)		Decreases rapidly*1	-	Injection stoppage, ignition stoppage Load from external parts	D
When accelerating or driving at constant speed, engine stalls*4	At least one is OFF	-	-	Sensor malfunction Injection stoppage, ignition stoppage Fuel supply problem	E

HINT:

*1: A rapid decrease in engine speed may be caused by an electrical fault in the shared wiring of all or a number of cylinders, an increase in load from external parts, etc. The engine speed is considered to have decreased rapidly if either of the following conditions applies.
Otherwise, the engine speed is considered to have decreased slowly.

In the freeze frame data, the decrease in engine speed from #3 to #5 is 400 rpm or more.
In the freeze frame data, the engine speed at #5 is 120 rpm or less.

If the vehicle speed is 30 km/h (19 mph) or less and the difference between Engine Speed and SPD (NT) is 100 rpm or less, inspect the automatic transmission. (Depending on the rate of vehicle deceleration, the engine speed may have decreased due to the A/T lock-up release being late.)
*2: When a DTC is stored, feedback compensation increases because the air fuel ratio is determined to be lean.
*3: When a DTC is stored, feedback compensation decreases because the air fuel ratio is determined to be rich.
*4: This item should be checked when DTC P1603 is output and is not necessary to check when only P1605 is output.

A

5.CHECK INTAKE SYSTEM

Check for air leakage in the intake system [vacuum hose disconnection, cracks, damaged gaskets, etc.] (COROLLA_ZRE142 RM000003410016X.html).
HINT:
1. If the accelerator pedal is released after racing the engine, the inspection is easier to perform because the vacuum inside the intake pipes increases and the air suction noise becomes louder.
2. If Short FT and Long FT are largely different from the normal values when idling (the intake air volume is small) and almost the same as the normal values when racing the engine (the intake air volume is high), air leakage may be present.
OK:
There is no air leakage.

REPAIR OR REPLACE INTAKE SYSTEM

OK

6.CHECK PURGE VSV

Disconnect the purge hose (on the canister side) of the purge VSV.

Start the engine.

Idle the engine.

Disconnect the connector of the purge VSV.

Check if air flows through the purge VSV.
OK:
Air does not flow.
HINT:
When this inspection is performed, the MIL may illuminate. After finishing the inspection, check and clear DTCs (COROLLA_ZRE142 RM000000PDK0ZAX.html).

REPLACE PURGE VSV (COROLLA_ZRE142 RM000002WUF03OX.html)

OK

7.READ FREEZE FRAME DATA

Connect the Techstream to the DLC3.

Turn the ignition switch to ON.

Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (COROLLA_ZRE142 RM000000PDS0TTX.html).

Result
Freeze Frame Data Item for DTC P1605	Result	Suspected Area	Proceed to
Stop Light Switch	At least 1 of the 5 sets of freeze frame data is ON	Air suction from brake booster	A
Stop Light Switch	All 5 sets of freeze frame data are OFF	-	B

Go to step 10

A

8.READ VALUE USING TECHSTREAM (SHORT FT)

Connect the Techstream to the DLC3.

Turn the ignition switch to ON.

Start the engine and warm it up until the engine coolant temperature stabilizes.
HINT:
The A/C switch and all accessory switches should be off.

Idle the engine.

Using the Techstream, read the value of Short FT #1 in the Data List while depressing the brake pedal.
Standard:
Short FT #1 changes by +10% or less.
HINT:
When air leakage from the brake booster is present, the feedback compensation increases because the air fuel ratio becomes lean.

INSPECT BRAKE BOOSTER ASSEMBLY (COROLLA_ZRE142 RM000002WLT02PX.html)

OK

9.PERFORM DRIVE TEST

Connect the Techstream to the DLC3.

Start the engine and warm it up until the engine coolant temperature stabilizes.
HINT:
The A/C switch and all accessory switches should be off.

Idle the engine.

Using the Techstream, read the value of Short FT #1 and Long FT #1 in the Data List.

Standard:

Data List
Condition
Specified Condition
Short FT #1 + Long FT #1
The conditions of the vehicle are matched to those present when the problem occurs
-15 to +15%

INSPECT BRAKE BOOSTER ASSEMBLY (COROLLA_ZRE142 RM000002WLT02PX.html)

OK

10.CHECK IGNITION SYSTEM

Perform ignition system On-vehicle Inspection (COROLLA_ZRE142 RM000001QVP061X.html).

REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

OK

11.READ FREEZE FRAME DATA

Connect the Techstream to the DLC3.

Turn the ignition switch to ON.

Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (COROLLA_ZRE142 RM000000PDS0TTX.html).

Result
Freeze Frame Data Item for DTC P1605	Result	Suspected Area	Proceed to
Calculate Load	Below 90% of the current value of the vehicle*1	Mass air flow meter sub-assembly	A
AFS Voltage B1S1	3.3 V or higher*2	Air fuel ratio sensor Wire harness or connector	B

HINT:

*1: If the mass air flow meter sub-assembly is malfunctioning and incorrectly measures the intake air volume to be less than the actual volume, the freeze frame data will show a low engine load value.
*2: If the air fuel ratio sensor is malfunctioning and constantly outputs a value indicating the air fuel ratio is lean, the actual air fuel ratio will become rich and the engine may stall.

Go to step 15

A

12.CHECK MASS AIR FLOW METER SUB-ASSEMBLY

Remove the mass air flow meter sub-assembly.

Check for foreign matter in the air flow passage of the mass air flow meter sub-assembly.

Result
Result
Proceed to
Visible foreign matter is not present
A
Visible foreign matter is present
B

REPLACE MASS AIR FLOW METER SUB-ASSEMBLY (COROLLA_ZRE142 RM0000030K7015X.html)

A

13.CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM)

Check the harnesses and connectors, referring to DTC P0102 inspection procedure (COROLLA_ZRE142 RM000000U5B0NJX_09_0004.html).
HINT:
1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
2. Make sure there is not an excessive amount of force applied to the wire harness.

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

14.PERFORM DRIVE TEST

Connect the Techstream to the DLC3.

Start the engine and warm it up until the engine coolant temperature stabilizes.
HINT:
The A/C switch and all accessory switches should be off.

Idle the engine.

Using the Techstream, read the value of Calculate Load in the Data List.

Standard:

Data List
Specified Condition
Calculate Load
90 to 110% of the current value of the vehicle

Result
Result
Proceed to
Abnormal
A
Normal
B

Go to step 18

REPLACE MASS AIR FLOW METER SUB-ASSEMBLY (COROLLA_ZRE142 RM0000030K7015X.html)

15.PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME FOR A/F SENSOR)

Connect the Techstream to the DLC3.

Start the engine, turn off all accessory switches and warm up the engine until the engine coolant temperature stabilizes.

Idle the engine.

Turn the Techstream on.

Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor / AFS Voltage B1S1.

Read the output voltage from the air fuel ratio sensor when increasing and decreasing the fuel injection volume.

Standard:

Tester Display	Specified Condition
Control the Injection Volume for A/F Sensor (+12.5%)	Air fuel ratio sensor output voltage is below 3.1 V
Control the Injection Volume for A/F Sensor (-12.5%)	Air fuel ratio sensor output voltage is higher than 3.4 V

Result
Result	Proceed to
Abnormal	A
Normal	B

HINT:

The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds.

Go to step 18

A

16.CHECK TERMINAL VOLTAGE (POWER SOURCE OF AIR FUEL RATIO SENSOR)

Check the harnesses and connectors, referring to DTC P0031 inspection procedure (COROLLA_ZRE142 RM000000WC10QAX_09_0004.html).
HINT:
1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
2. Make sure there is not an excessive amount of force applied to the wire harness.

REPAIR AIR FUEL RATIO SENSOR POWER SOURCE CIRCUIT (COROLLA_ZRE142 RM000000WC10QAX_09_0008.html)

OK

17.CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM)

Check the harnesses and connectors, referring to DTC P2237 inspection procedure (COROLLA_ZRE142 RM0000028K60DKX_10_0007.html).
HINT:
1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
2. Make sure there is not an excessive amount of force applied to the wire harness.

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

18.READ FREEZE FRAME DATA

Connect the Techstream to the DLC3.

Turn the ignition switch to ON.

Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (COROLLA_ZRE142 RM000000PDS0TTX.html).

Result
Freeze Frame Data Item for DTC P1605	Result	Proceed to
Initial Engine Coolant Temp, Ambient Temp for A/C, Initial Intake Air Temp	Difference in temperature between each item is less than 10°C (18°F) *1	A
	Difference in temperature between each item is 10°C (18°F) or more*2	B

HINT:

*1: A long time had elapsed after stopping the engine.
*2: A long time had not elapsed after stopping the engine.

Go to step 21

A

19.READ FREEZE FRAME DATA

Connect the Techstream to the DLC3.

Turn the ignition switch to ON.

Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (COROLLA_ZRE142 RM000000PDS0TTX.html).

Result
Freeze Frame Data Item for DTC P1605	Result	Suspected Area	Proceed to
Initial Engine Coolant Temp, Coolant Temp, Engine Run Time	Range A	Engine coolant temperature sensor Thermostat	A
	Range B	Engine coolant temperature sensor	B
	Range C	-	C

HINT:

This step is not directly related to engine stall.

Go to step 22

Go to step 24

A

20.INSPECT THERMOSTAT

Inspect the thermostat (COROLLA_ZRE142 RM00000335X02JX.html).

Result
Result
Proceed to
Abnormal
A
Normal
B

Go to step 22

REPLACE THERMOSTAT (COROLLA_ZRE142 RM000000RTF051X.html)

21.READ FREEZE FRAME DATA

Connect the Techstream to the DLC3.

Turn the ignition switch to ON.

Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (COROLLA_ZRE142 RM000000PDS0TTX.html).

Result
Freeze Frame Data Item for DTC P1605	Result	Suspected Area	Proceed to
Coolant Temp	120°C (248°F) or higher	Engine coolant temperature sensor	A
Coolant Temp	Engine coolant temperature is lower than outside temperature* by 15°C (27°F) or more	Engine coolant temperature sensor	A
Both freeze frame data items listed above	Values are other than above	-	B

HINT:

*: Use an actual outside temperature estimated from the Initial Intake Air, Ambient Temp for A/C, and (if possible) the weather when the DTC was detected.

Go to step 24

A

22.INSPECT ENGINE COOLANT TEMPERATURE SENSOR

Inspect the engine coolant temperature sensor (COROLLA_ZRE142 RM000001DBF02MX.html).

REPLACE ENGINE COOLANT TEMPERATURE SENSOR (COROLLA_ZRE142 RM0000030LG014X.html)

OK

23.CHECK HARNESS AND CONNECTOR (ECM - ENGINE COOLANT TEMPERATURE SENSOR)

Disconnect the ECM connector.

Disconnect the engine coolant temperature sensor connector.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection
Condition
Specified Condition
B31-64 (THW) - B58-2
Always
Below 1 Ω
B31-65 (ETHW) - B58-1
Always
Below 1 Ω
B31-64 (THW) or B58-2 - Body ground
Always
10 kΩ or higher
HINT:
1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
2. Make sure there is not an excessive amount of force applied to the wire harness.

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

24.READ FREEZE FRAME DATA

Connect the Techstream to the DLC3.

Turn the ignition switch to ON.

Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (COROLLA_ZRE142 RM000000PDS0TTX.html).

Result
Freeze Frame Data Item for DTC P1605
Result
Suspected Area
Proceed to
EVAP (Purge) VSV
At least 1 of the 5 sets of freeze frame data is not 0%
Purge VSV
A
All 5 sets of freeze frame data are 0%
-
B
HINT:
If the purge VSV is stuck closed, air fuel ratio compensation by the purge VSV is incorrectly adjusted, and then the air fuel ratio becomes lean and the engine may stall.

Go to step 33

A

25.PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE VSV FOR EVAP CONTROL)

Disconnect the purge hose (on the canister side) of the purge VSV.

Connect the Techstream to the DLC3.

Turn the ignition switch to ON.

Start the engine.

Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for Evap Control.

Operate the purge VSV and check the air flow.
OK:
Activate the VSV for Evap Control
Specified Condition
ON
Air flows
OFF
Air does not flow
Result
Result
Proceed to
NG
A
OK
B

HINT:

Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.

Go to step 33

A

26.INSPECT PURGE VSV

Inspect the purge VSV (COROLLA_ZRE142 RM000000R35032X.html).

REPLACE PURGE VSV (COROLLA_ZRE142 RM000002WUF03OX.html)

OK

27.CHECK TERMINAL VOLTAGE (PURGE VSV POWER SOURCE)

Disconnect the purge VSV connector.

Turn the ignition switch to ON.

Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
Switch Condition
Specified Condition
B19-1 - Body ground
Ignition switch ON
11 to 14 V
HINT:
1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
2. Make sure there is not an excessive amount of force applied to the wire harness.

REPAIR OR REPLACE HARNESS OR CONNECTOR (PURGE VSV - EFI MAIN RELAY)

OK

28.CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM)

Check harness and connector.
HINT:
1. Refer to DTC P0443 inspection procedure for Mexico models (COROLLA_ZRE142 RM000000VSO0GVX_04_0005.html).
2. Refer to EVAP System inspection procedure except Mexico models (COROLLA_ZRE142 RM0000011IO03FX_16_0077.html).
3. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
4. Make sure there is not an excessive amount of force applied to the wire harness.

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

29.CLEAR DTC

Connect the Techstream to the DLC3.

Turn the ignition switch to ON.

Turn the Techstream on.

Clear the DTCs (COROLLA_ZRE142 RM000000PDK0ZAX.html).

NEXT

30.READ VALUE USING TECHSTREAM (EVAP (PURGE) VSV)

Connect the Techstream to the DLC3.

Start the engine and warm it up until the engine coolant temperature stabilizes.
HINT:
The A/C switch and all accessory switches should be off.

Idle the engine for 15 minutes or more.

Using the Techstream, read the value of EVAP (Purge) VSV in the Data List.

Standard:

Data List
Specified Condition
EVAP (Purge) VSV
Value other than 0% is displayed

Result
Result
Proceed to
Abnormal
A
Normal
B

CHECK FOR INTERMITTENT PROBLEMS (COROLLA_ZRE142 RM000000PDQ0VMX.html)

A

31.PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE VSV FOR EVAP CONTROL)

Disconnect the purge hose (on the canister side) of the purge VSV.

Connect the Techstream to the DLC3.

Turn the ignition switch to ON.

Start the engine.

Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for Evap Control.

Operate the purge VSV and check the air flow.
OK:
Activate the VSV for Evap Control
Specified Condition
ON
Air flows
OFF
Air does not flow
Result
Result
Proceed to
NG
A
OK
B

HINT:

Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.

CHECK FOR INTERMITTENT PROBLEMS (COROLLA_ZRE142 RM000000PDQ0VMX.html)

A

32.CHECK CONNECTOR CONNECTION CONDITION (ECM)

Check the ECM connector connection condition.
HINT:
1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
2. Make sure there is not an excessive amount of force applied to the wire harness.

RECONNECT CONNECTOR CORRECTLY

REPLACE ECM (COROLLA_ZRE142 RM000001CN0030X.html)

33.PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED)

Connect the Techstream to the DLC3.

Turn the ignition switch to ON.

Turn the Techstream on.

Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed.

Check whether the fuel pump operating sound occurs when performing the Active Test on the Techstream.

Standard:

Techstream Operation
Specified Condition
ON
Operating sound heard
OFF
Operating sound not heard

Result:

Result
Specified Condition
Abnormal
A
Normal
B
HINT:
1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
2. While performing the Active Test, make sure that there is no fuel leakage from the pipes, no signs that fuel has leaked, and no fuel smell.
3. If the fuel pump operating noise is abnormal, proceed to step 34.

Go to step 35

A

34.INSPECT FUEL PUMP

Inspect the fuel pump (COROLLA_ZRE142 RM0000022XV036X.html).

REPLACE FUEL PUMP (COROLLA_ZRE142 RM0000022XX05ZX.html)

CHECK FUEL PUMP CONTROL CIRCUIT (COROLLA_ZRE142 RM0000027680A7X.html)

35.CHECK FUEL SYSTEM

Check the fuel system.
1. Check the fuel pump operation.
2. Check the fuel leaks.
3. Check the fuel pressure.
4. Perform the Active Test [Control the All Cylinders Fuel Cut].
HINT:
For the fuel system On-vehicle Inspection, refer to the following procedures (COROLLA_ZRE142 RM000001IQZ09UX.html).

Result
Result
Proceed to
Abnormal
A
Normal
B

CHECK FOR INTERMITTENT PROBLEMS (COROLLA_ZRE142 RM000000PDQ0VMX.html)

A

36.CHECK FUEL SYSTEM

Check for foreign matter such as iron particles around the fuel pump (fuel pump, fuel pump filter and inside the fuel tank), and for signs that the fuel pump was stuck.

Result
Result
Proceed to
There is no foreign matter and no signs that fuel pump was stuck
A
There is foreign matter or signs that fuel pump was stuck
B
HINT:
If there is foreign matter such as iron particles on the fuel pump, fuel filter or fuel tank, remove the foreign matter.

REPAIR OR REPLACE FUEL SYSTEM

A

37.CHECK FUEL SYSTEM

Check the fuel system.
1. Check the fuel pump operation.
2. Check the fuel leaks.
3. Check the fuel pressure.
4. Perform the Active Test [Control the All Cylinders Fuel Cut].
HINT:
For the fuel system On-vehicle Inspection, refer to the following procedures (COROLLA_ZRE142 RM000001IQZ09UX.html).

REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

END

38.CHECK IGNITION SYSTEM

Perform ignition system On-vehicle Inspection (COROLLA_ZRE142 RM000001QVP061X.html).

REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

OK

39.READ FREEZE FRAME DATA

Connect the Techstream to the DLC3.

Turn the ignition switch to ON.

Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (COROLLA_ZRE142 RM000000PDS0TTX.html).

Result
Freeze Frame Data Item for DTC P1605	Result	Suspected Area	Proceed to
Calculate Load	110% or more of the current value of the vehicle*1	Mass air flow meter sub-assembly	A
AFS Voltage B1S1	Below 3.3 V*2	Air fuel ratio sensor Harness and connector	B
Both freeze frame data items listed above	Values are other than above	-	C

HINT:

*1: If the mass air flow meter sub-assembly is malfunctioning and incorrectly measures the intake air volume to be higher than the actual volume of air flowing through the intake air surge tank assembly, the freeze frame data will show a high engine load value.
*2: As the air fuel ratio sensor output is low before the sensor warms up, the value at that time cannot be used for diagnosis. If the air fuel ratio sensor is malfunctioning and constantly outputs a value indicating the air fuel ratio is rich, the actual air fuel ratio will become lean and the engine may stall.

Go to step 43

Go to step 46

A

40.CHECK MASS AIR FLOW METER SUB-ASSEMBLY

Remove the mass air flow meter sub-assembly (COROLLA_ZRE142 RM0000030K7015X.html).

Check for foreign matter in the air flow passage of the mass air flow meter sub-assembly.

Result
Result
Proceed to
Visible foreign matter is not present
A
Visible foreign matter is present
B

REPLACE MASS AIR FLOW METER SUB-ASSEMBLY (COROLLA_ZRE142 RM0000030K7015X.html)

A

41.CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM)

Check the harnesses and connectors, referring to DTC P0102 inspection procedure (COROLLA_ZRE142 RM000000U5B0NJX_09_0004.html).
HINT:
1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
2. Make sure there is not an excessive amount of force applied to the wire harness.

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

42.PERFORM DRIVE TEST

Connect the Techstream to the DLC3.

Start the engine and warm it up until the engine coolant temperature stabilizes.
HINT:
The A/C switch and all accessory switches should be off.

Idle the engine.

Using the Techstream, read the value of Calculate Load in the Data List.

Standard:

Data List
Specified Condition
Calculate Load
90 to 110% of the current value of the vehicle

REPLACE MASS AIR FLOW METER SUB-ASSEMBLY (COROLLA_ZRE142 RM0000030K7015X.html)

OK

43.PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME FOR A/F SENSOR)

Connect the Techstream to the DLC3.

Start the engine, turn off all accessory switches and warm up the engine until the engine coolant temperature stabilizes.

Idle the engine.

Turn the Techstream on.

Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor / AFS Voltage B1S1.

Read the output voltage from the air fuel ratio sensor when increasing and decreasing the fuel injection volume.

Standard:

Tester Display	Specified Condition
Control the Injection Volume for A/F Sensor (+12.5%)	Air fuel ratio sensor output voltage is below 3.1 V
Control the Injection Volume for A/F Sensor (-12.5%)	Air fuel ratio sensor output voltage is higher than 3.4 V

Result
Result	Proceed to
Abnormal	A
Normal	B

HINT:

The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds.

Go to step 46

A

44.CHECK TERMINAL VOLTAGE (POWER SOURCE OF AIR FUEL RATIO SENSOR)

Check the harnesses and connectors, referring to DTC P0031 inspection procedure (COROLLA_ZRE142 RM000000WC10QAX_09_0004.html).
HINT:
1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
2. Make sure there is not an excessive amount of force applied to the wire harness.

REPAIR AIR FUEL RATIO SENSOR POWER SOURCE CIRCUIT (COROLLA_ZRE142 RM000000WC10QAX_09_0008.html)

OK

45.CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM)

Check the harnesses and connectors, referring to DTC P2237 inspection procedure (COROLLA_ZRE142 RM0000028K60DKX_10_0007.html).
HINT:
1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
2. Make sure there is not an excessive amount of force applied to the wire harness.

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

46.READ FREEZE FRAME DATA

Connect the Techstream to the DLC3.

Turn the ignition switch to ON.

Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (COROLLA_ZRE142 RM000000PDS0TTX.html).

Result
Freeze Frame Data Item for DTC P1605	Result	Proceed to
Initial Engine Coolant Temp, Ambient Temp for A/C, Initial Intake Air Temp	Difference in temperature between each item is less than 10°C (18°F)*1	A
	Difference in temperature between each item is 10°C (18°F) or more*2	B

HINT:

*1: A long time had elapsed after stopping the engine.
*2: A long time had not elapsed after stopping the engine.

Go to step 49

A

47.READ FREEZE FRAME DATA

Connect the Techstream to the DLC3.

Turn the ignition switch to ON.

Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (COROLLA_ZRE142 RM000000PDS0TTX.html).

Result
Freeze Frame Data Item for DTC P1605	Result	Suspected Area	Proceed to
Initial Engine Coolant Temp, Coolant Temp, Engine Run Time	Range A	Engine coolant temperature sensor Thermostat	A
	Range B	Engine coolant temperature	B
	Range C	-	C

HINT:

This step is not directly related to engine stall.

Go to step 50

Go to step 79

A

48.INSPECT THERMOSTAT

Inspect the thermostat (COROLLA_ZRE142 RM00000335X02JX.html).

Result
Result
Proceed to
Abnormal
A
Normal
B

HINT:

This step is not directly related to engine stall.

Go to step 50

REPLACE THERMOSTAT (COROLLA_ZRE142 RM000000RTF051X.html)

49.READ FREEZE FRAME DATA

Connect the Techstream to the DLC3.

Turn the ignition switch to ON.

Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (COROLLA_ZRE142 RM000000PDS0TTX.html).

Result
Freeze Frame Data Item for DTC P1605	Result	Suspected Area	Proceed to
Coolant Temp	120°C (248°F) or higher	Engine coolant temperature sensor	A
Coolant Temp	Engine coolant temperature is lower than outside temperature* by 15°C (27°F) or more	Engine coolant temperature sensor	A
Both freeze frame data items listed above	Values are other than above	-	B

HINT:

*: Use an actual outside temperature estimated from the Initial Intake Air, Ambient Temp for A/C, and (if possible) the weather when the DTC was detected.

Go to step 82

A

50.INSPECT ENGINE COOLANT TEMPERATURE SENSOR

Inspect the engine coolant temperature sensor (COROLLA_ZRE142 RM000001DBF02MX.html).

REPLACE ENGINE COOLANT TEMPERATURE SENSOR (COROLLA_ZRE142 RM0000030LG014X.html)

OK

51.CHECK HARNESS AND CONNECTOR (ECM - ENGINE COOLANT TEMPERATURE SENSOR)

Disconnect the ECM connector.

Disconnect the engine coolant temperature sensor connector.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection
Condition
Specified Condition
B31-64 (THW) - B58-2
Always
Below 1 Ω
B31-65 (ETHW) - B58-1
Always
Below 1 Ω
B31-64 (THW) or B58-2 - Body ground
Always
10 kΩ or higher
HINT:
1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
2. Make sure there is not an excessive amount of force applied to the wire harness.

REPAIR OR REPLACE HARNESS OR CONNECTOR

CHECK FOR INTERMITTENT PROBLEMS (COROLLA_ZRE142 RM000000PDQ0VMX.html)

52.CHECK IGNITION SYSTEM

Perform ignition system On-vehicle Inspection (COROLLA_ZRE142 RM000001QVP061X.html).

REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

OK

53.READ FREEZE FRAME DATA

Connect the Techstream to the DLC3.

Turn the ignition switch to ON.

Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (COROLLA_ZRE142 RM000000PDS0TTX.html).

Result
Freeze Frame Data Item for DTC P1605	Result	Suspected Area	Proceed to
Total of ISC Learning Value and ISC Feedback Value	Below 80% of the current value of the vehicle	Intake air volume insufficient	A
Total of ISC Learning Value and ISC Feedback Value	80% or more of the current value of the vehicle	Intake air volume insufficient	B

Go to step 56

A

54.CHECK INTAKE SYSTEM

Check for air leakage in the intake system [vacuum hose disconnection, cracks, damaged gaskets, etc.] (COROLLA_ZRE142 RM000003410016X.html).
HINT:
1. If the accelerator pedal is released after racing the engine, the inspection is easier to perform because the vacuum inside the intake pipes increases and the air suction noise becomes louder.
2. If Short FT and Long FT are largely different from the normal values when idling (the intake air volume is small) and almost the same as the normal values when racing the engine (the intake air volume is high), air leakage may be present.
OK:
There is no air leakage.

REPAIR OR REPLACE INTAKE SYSTEM

OK

55.CHECK INTAKE SYSTEM

Check the intake system.
1. Inspect the brake booster assembly (COROLLA_ZRE142 RM000002WLT02PX.html).
2. Inspect the mass air flow meter sub-assembly (COROLLA_ZRE142 RM000000U5B0NJX_09_0022.html).
3. Check the PCV hose (COROLLA_ZRE142 RM000002WZK01NX.html).
4. Inspect the PCV valve (COROLLA_ZRE142 RM0000012O703YX.html).
5. Inspect the purge VSV (COROLLA_ZRE142 RM000000R35032X.html).
Result
Result
Proceed to
Abnormal
A
Normal
B

Go to step 60

REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

56.PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT LINEAR)

Perform the Active Test, referring to DTC P0011 inspection procedure (COROLLA_ZRE142 RM000000PDU0PRX_13_0002.html).
HINT:
1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
2. When the results of the inspection using the Active Test are normal but the valve operating noise is abnormal, check the valve for any signs of problems.
3. If the camshaft timing oil control valve is stuck on, the valve overlap increases and combustion worsens due to the internal EGR which may cause rough idle or cause the engine to stall.

REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT) (COROLLA_ZRE142 RM000003D3E00WX.html)

OK

57.CHECK HARNESS AND CONNECTOR (CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT) - ECM)

Check the harnesses and connectors, referring to DTC P0010 inspection procedure (COROLLA_ZRE142 RM000000PDW0NTX_09_0003.html).
HINT:
1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
2. Make sure there is not an excessive amount of force applied to the wire harness.

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

58.PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT EXHAUST LINEAR)

Perform the Active Test, referring to DTC P0014 inspection procedure (COROLLA_ZRE142 RM000000XH80GOX_10_0002.html).
HINT:
1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
2. When the results of the inspection using the Active Test are normal but the valve operating noise is abnormal, check the valve for any signs of problems.
3. If the camshaft timing oil control valve is stuck on, the valve overlap increases and combustion worsens due to the internal EGR which may cause rough idle or cause the engine to stall.

REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR EXHAUST CAMSHAFT) (COROLLA_ZRE142 RM000003D3E00WX.html)

OK

59.CHECK HARNESS AND CONNECTOR (CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR EXHAUST CAMSHAFT) - ECM)

Check the harnesses and connectors, referring to DTC P0013 inspection procedure (COROLLA_ZRE142 RM000000XH70FWX_09_0005.html).
HINT:
1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
2. Make sure there is not an excessive amount of force applied to the wire harness.

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

60.READ FREEZE FRAME DATA

Connect the Techstream to the DLC3.

Turn the ignition switch to ON.

Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (COROLLA_ZRE142 RM000000PDS0TTX.html).

Result
Freeze Frame Data Item for DTC P1605		Suspected Area	Proceed to
IGN Advance	Knock Correct Learn Value
Differs from the current value of the vehicle by 10 deg or more	Less than 3 deg(CA)	Engine coolant temperature sensor Mass air flow meter sub-assembly Knock control sensor	A
	3 deg(CA) or more	-	B
Differs from the current value of the vehicle by less than 10 deg	-	-

CHECK FOR INTERMITTENT PROBLEMS (COROLLA_ZRE142 RM000000PDQ0VMX.html)

A

61.INSPECT ENGINE COOLANT TEMPERATURE SENSOR

Inspect the engine coolant temperature sensor (COROLLA_ZRE142 RM000001DBF02MX.html).

REPLACE ENGINE COOLANT TEMPERATURE SENSOR (COROLLA_ZRE142 RM0000030LG014X.html)

OK

62.CHECK HARNESS AND CONNECTOR (ECM - ENGINE COOLANT TEMPERATURE SENSOR)

Disconnect the ECM connector.

Disconnect the engine coolant temperature sensor connector.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection
Condition
Specified Condition
B31-64 (THW) - B58-2
Always
Below 1 Ω
B31-65 (ETHW) - B58-1
Always
Below 1 Ω
B31-64 (THW) or B58-2 - Body ground
Always
10 kΩ or higher
HINT:
1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
2. Make sure there is not an excessive amount of force applied to the wire harness.

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

63.INSPECT MASS AIR FLOW METER SUB-ASSEMBLY (INTAKE AIR TEMPERATURE SENSOR)

Inspect the mass air flow meter sub-assembly (intake air temperature sensor) (COROLLA_ZRE142 RM000002W8701JX.html).
HINT:
If the intake air temperature sent to the ECM is higher than the standard due to the mass air flow meter sub-assembly (intake air temperature sensor) malfunctioning, the ignition timing may become delayed.

REPLACE MASS AIR FLOW METER SUB-ASSEMBLY (COROLLA_ZRE142 RM0000030K7015X.html)

OK

64.READ VALUE USING TECHSTREAM (IGN ADVANCE AND KNOCK CORRECT LEARN VALUE)

Connect the Techstream to the DLC3.

Start the engine and warm it up until the engine coolant temperature stabilizes.
HINT:
The A/C switch and all accessory switches should be off.

Idle the engine.

Using the Techstream, read the value of IGN Advance and Knock Correct Learn Value in the Data List.

Result
Freeze Frame Data Item for DTC P1605		Proceed to
IGN Advance	Knock Correct Learn Value
Differs from the current value of the vehicle by 10 deg or more	Less than 3 deg(CA)	A
	3 deg(CA) or more	B
Differs from the current value of the vehicle by less than 10 deg	-

HINT:

If the results of the checks performed in steps 56 to 64 were all normal and the sum of ISC Feedback Value and ISC Learning Value in the Data List is 120% of the normal value or more, check for carbon deposits in the throttle body assembly. If there are carbon deposits, clean them off to finish the troubleshooting procedure.

END

CHECK KNOCK SENSOR CIRCUIT (COROLLA_ZRE142 RM000004NFI002X.html)

65.CHECK TERMINAL VOLTAGE (POWER SOURCE OF FUEL INJECTOR ASSEMBLY)

Check the harness and connectors, referring to Fuel Injector Circuit inspection procedure (COROLLA_ZRE142 RM000000ZRM0FVX_06_0025.html).
HINT:
1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
2. Make sure there is not an excessive amount of force applied to the wire harness.
3. A rapid decrease in engine speed may have been caused by a malfunction in all or multiple cylinders. (There may be an electrical malfunction in the wiring shared by all the cylinders.)

REPAIR FUEL INJECTOR ASSEMBLY POWER SOURCE CIRCUIT (COROLLA_ZRE142 RM000000ZRM0FVX_06_0028.html)

OK

66.CHECK IGNITION SYSTEM

Perform ignition system On-vehicle Inspection (COROLLA_ZRE142 RM000001QVP061X.html).

REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

OK

67.CHECK FREEZE FRAME DATA

Connect the Techstream to the DLC3.

Turn the ignition switch to ON.

Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (COROLLA_ZRE142 RM000000PDS0TTX.html).

Result
Freeze Frame Data Item for DTC P1605			Suspected Area	Proceed to
A/C Signal	Air Conditioner FB Val	Power Steering Signal
A/C Signal display does not change from OFF	Value displayed for Air Conditioner FB Val does not increase	Changes from OFF to ON	Power steering system	A2 B3
		Does not change from OFF	-
A/C Signal display changes from OFF to ON*1	Value displayed for Air Conditioner FB Val increases	Changes from OFF to ON	Power steering system
		Does not change from OFF	A/C system (for automatic air conditioning system)	C
			A/C system (for manual air conditioning system)	D

HINT:

*1: Check not only the ON/OFF state of the air conditioner but also the change in air conditioner load.
*2: for Automatic transaxle models
*3: for Manual transaxle models
The normal value for the ISC learned value is engine displacement (liters) x 0.9.
Even if the results are normal, the power steering system or A/C system may have been malfunctioning. If there are no problems with other parts, inspect the power steering system or A/C system.

Go to step 70

CHECK AIR CONDITIONING SYSTEM (COROLLA_ZRE142 RM000000PM60A0X.html)

CHECK AIR CONDITIONING SYSTEM (COROLLA_ZRE142 RM000000PM60A1X.html)

A

68.CHECK FREEZE FRAME DATA

Connect the Techstream to the DLC3.

Turn the ignition switch to ON.

Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (COROLLA_ZRE142 RM000000PDS0TTX.html).

Result
Freeze Frame Data Item for DTC P1605				Suspected Area	Proceed to
Electrical Load Signal 1 (2) or Electric Load Feedback Val	Electric Load Feedback Val	Difference between Engine Speed and SPD (NT)	Vehicle Speed	Suspected Area	Proceed to
Electrical Load Signal 1 (2) display changes from OFF to ON3, or value displayed for Electric Load Feedback Val increases3	Value displayed for Electric Load Val changes	-	-	Electrical load signal circuit	C
	Value displayed for Electric Load Val does not change	At least 1 of the 5 sets of freeze frame data is less than 100 rpm	Less than 30 km/h (19 mph)	A/T system	B
			30 km/h (19 mph) or more	-	A
		All 5 sets of freeze frame data are 100 rpm or more	-	-	A
Electrical Load Signal 1 (2) display does not change from OFF, or value displayed for Electric Load Feedback Val does not increase	-	At least 1 of the 5 sets of freeze frame data is less than 100 rpm	Less than 30 km/h (19 mph)	A/T system	B
			30 km/h (19 mph) or more	-	A
		All 5 sets of freeze frame data are 100 rpm or more	-	-	A

HINT:

*3: If the Electrical Load Signal 1 (2) display changes from OFF to ON, or the "Electric Load Feedback Val" increases, it probably is a malfunction due to a change in electrical load. Check the generator and the continuity and connections between the generator and ECM.
If the vehicle speed is 30 km/h (19 mph) or less and the difference between Engine Speed and SPD (NT) is 100 rpm or less, inspect the automatic transmission. (Depending on the rate of vehicle deceleration, the engine speed may have decreased due to the A/T lock-up release being late.)
The normal value for the ISC learned value is engine displacement (liters) x 0.9.
Even if the results are normal, the electrical load signal system and/or A/T system may have been malfunctioning. If there are no problems with other parts, inspect the electrical load system and/or A/T system.

CHECK AUTOMATIC TRANSMISSION SYSTEM (COROLLA_ZRE142 RM000000W6Z0URX.html)

CHECK GENERATOR CIRCUIT (COROLLA_ZRE142 RM000001J3Y05QX.html)

A

69.CHECK FREEZE FRAME DATA

Connect the Techstream to the DLC3.

Turn the ignition switch to ON.

Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (COROLLA_ZRE142 RM000000PDS0TTX.html).

Result
Freeze Frame Data Item for DTC P1605		Suspected Area	Proceed to
Shift SW Status (P Range) Shift SW Status (N Range)	Neutral Position SW Signal	Suspected Area	Proceed to
P and N position are both OFF in at least one data set	ON when shift lever in D or R	Park/Neutral position switch assembly	A
P and N position are both OFF in at least one data set	OFF when shift lever in D or R	A/T system	B
All 5 sets of freeze frame data are ON	-	-	C

HINT:

Even if the results are normal, the park/neutral position switch assembly and/or A/T system may have been malfunctioning. If there are no problems with other parts, inspect the park/neutral position switch assembly and/or A/T system.

CHECK AUTOMATIC TRANSMISSION SYSTEM (COROLLA_ZRE142 RM000000W6Z0URX.html)

CHECK FOR INTERMITTENT PROBLEMS (COROLLA_ZRE142 RM000000PDQ0VMX.html)

INSPECT PARK/NEUTRAL POSITION SWITCH (COROLLA_ZRE142 RM00000191B03DX.html)

70.READ FREEZE FRAME DATA

Connect the Techstream to the DLC3.

Turn the ignition switch to ON.

Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (COROLLA_ZRE142 RM000000PDS0TTX.html).

Result:

Freeze Frame Data Item for DTC P1605		Suspected Area	Proceed to
Electrical Load Signal 1 (2) or Electric Load Feedback Val	Electric Load Feedback Val	Suspected Area	Proceed to
Electrical Load Signal 1 (2) display changes from OFF to ON, or value displayed for Electric Load Feedback Val increases	Value displayed for Electric Load Val changes	Electrical load signal circuit	A
	Value displayed for Electric Load Val does not change	-	B
Electrical Load Signal 1 (2) display does not change from OFF, or value displayed for Electric Load Feedback Val does not increase	-	-	B

HINT:

*: If the Electrical Load Signal 1 (2) display changes from OFF to ON or the "Electric Load Feedback Val" increases, it probably is a malfunction due to a change in electrical load. Check the generator and the continuity and connections between the generator and ECM.
The normal value for the ISC learned value is engine displacement (liters) x 0.9.
Even if the results are normal, the electrical load signal system may have been malfunctioning. If there are no problems with other parts, inspect the electrical load system.

CHECK FOR INTERMITTENT PROBLEMS (COROLLA_ZRE142 RM000000PDQ0VMX.html)

CHECK GENERATOR CIRCUIT (COROLLA_ZRE142 RM000001J3Y05QX.html)

71.CHECK FREEZE FRAME DATA

Connect the Techstream to the DLC3.

Turn the ignition switch to ON.

Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (COROLLA_ZRE142 RM000000PDS0TTX.html).

Result
Freeze Frame Data Item	Result	Suspected Area	Proceed to
Throttle Sensor Position, Calculate Load	Calculate Load decreases while Throttle Sensor Position increases	Mass air flow meter sub-assembly	A
Throttle Sensor Position, Calculate Load	Calculate Load does not decrease while Throttle Sensor Position increases	-	B

Go to step 75

A

72.CHECK MASS AIR FLOW METER SUB-ASSEMBLY

Remove the mass air flow meter sub-assembly (COROLLA_ZRE142 RM0000030K7015X.html).

Check for foreign matter in the air flow passage of the mass air flow meter sub-assembly.

Result
Result
Proceed to
Visible foreign matter is not present
A
Visible foreign matter is present
B

REPLACE MASS AIR FLOW METER SUB-ASSEMBLY (COROLLA_ZRE142 RM0000030K7015X.html)

A

73.CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM)

Check the harnesses and connectors, referring to DTC P0102 inspection procedure (COROLLA_ZRE142 RM000000U5B0NJX_09_0004.html).
HINT:
1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
2. Make sure there is not an excessive amount of force applied to the wire harness.

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

74.PERFORM DRIVE TEST

Connect the Techstream to the DLC3.

Start the engine and warm it up until the engine coolant temperature stabilizes.
HINT:
The A/C switch and all accessory switches should be off.

Idle the engine.

Using the Techstream, read the value of Calculate Load in the Data List.

Standard:

Data List
Specified Condition
Calculate Load
90 to 110% of the current value of the vehicle

REPLACE MASS AIR FLOW METER SUB-ASSEMBLY (COROLLA_ZRE142 RM0000030K7015X.html)

OK

75.CHECK TERMINAL VOLTAGE (POWER SOURCE OF FUEL INJECTOR ASSEMBLY)

Check the harness and connectors, referring to Fuel Injector Circuit inspection procedure (COROLLA_ZRE142 RM000000ZRM0FVX_06_0025.html).
HINT:
1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
2. Make sure there is not an excessive amount of force applied to the wire harness.
3. A rapid decrease in engine speed may have been caused by a malfunction in all or multiple cylinders. (There may be an electrical malfunction in the wiring shared by all the cylinders.)

REPAIR FUEL INJECTOR ASSEMBLY POWER SOURCE CIRCUIT (COROLLA_ZRE142 RM000000ZRM0FVX_06_0028.html)

OK

76.CHECK IGNITION SYSTEM

Perform ignition system On-vehicle Inspection (COROLLA_ZRE142 RM000001QVP061X.html).

REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

OK

77.PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED)

Connect the Techstream to the DLC3.

Turn the ignition switch to ON.

Turn the Techstream on.

Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed.

Check whether the fuel pump operating sound occurs when performing the Active Test on the Techstream.

Standard:

Techstream Operation
Specified Condition
ON
Operating sound heard
OFF
Operating sound not heard

Result:

Result
Specified Condition
Abnormal
A
Normal
B
HINT:
1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
2. While performing the Active Test, make sure that there is no fuel leakage from the pipes, no signs that fuel has leaked, and no fuel smell.
3. If the fuel pump operating noise is abnormal, proceed to step 78.

Go to step 79

A

78.INSPECT FUEL PUMP

Inspect the fuel pump (COROLLA_ZRE142 RM0000022XV036X.html).

REPLACE FUEL PUMP (COROLLA_ZRE142 RM0000022XX05ZX.html)

CHECK FUEL PUMP CONTROL CIRCUIT (COROLLA_ZRE142 RM0000027680A7X.html)

79.CHECK FUEL SYSTEM

Check the fuel system.
1. Check the fuel pump operation.
2. Check the fuel leaks.
3. Check the fuel pressure.
4. Perform the Active Test [Control the All Cylinder Fuel Cut].
HINT:
For the fuel system On-vehicle Inspection, refer to the following procedures (COROLLA_ZRE142 RM000001IQZ09UX.html).

Result
Result
Proceed to
Abnormal
A
Normal
B

CHECK FOR INTERMITTENT PROBLEMS (COROLLA_ZRE142 RM000000PDQ0VMX.html)

A

80.CHECK FUEL SYSTEM

Check for foreign matter such as iron particles around the fuel pump (fuel pump, fuel pump filter and inside the fuel tank), and for signs that the fuel pump was stuck.

Result
Result
Proceed to
There is no foreign matter and no signs that fuel pump was stuck
A
There is foreign matter or signs that fuel pump was stuck
B
HINT:
If there is foreign matter such as iron particles on the fuel pump, fuel filter or fuel tank, remove the foreign matter.

REPAIR OR REPLACE FUEL SYSTEM

A

81.CHECK FUEL SYSTEM

Check the fuel system.
1. Check the fuel pump operation.
2. Check the fuel leaks.
3. Check the fuel pressure.
4. Perform the Active Test [Control the All Cylinder Fuel Cut].
HINT:
For the fuel system On-vehicle Inspection, refer to the following procedures (COROLLA_ZRE142 RM000001IQZ09UX.html).

REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

END

82.CLEAR DTC

Connect the Techstream to the DLC3.

Turn the ignition switch to ON.

Turn the Techstream on.

Clear the DTCs (COROLLA_ZRE142 RM000000PDK0ZAX.html).

END

Result	Proceed to
Only DTC P1603 and/or P1605 is output	A
DTC and other DTCs P1603 and/or P1605 are output	B

Result	Proceed to
OK	A
NG (w/ smart key system)	B
NG (w/o smart key system)	C

Data List	Condition	Specified Condition
Short FT #1 + Long FT #1	The conditions of the vehicle are matched to those present when the problem occurs	-15 to +15%

Result	Proceed to
Visible foreign matter is not present	A
Visible foreign matter is present	B

Tester Connection	Condition	Specified Condition
B31-64 (THW) - B58-2	Always	Below 1 Ω
B31-65 (ETHW) - B58-1	Always	Below 1 Ω
B31-64 (THW) or B58-2 - Body ground	Always	10 kΩ or higher

Activate the VSV for Evap Control	Specified Condition
ON	Air flows
OFF	Air does not flow

Tester Connection	Switch Condition	Specified Condition
B19-1 - Body ground	Ignition switch ON	11 to 14 V

Techstream Operation	Specified Condition
ON	Operating sound heard
OFF	Operating sound not heard

Result	Proceed to
There is no foreign matter and no signs that fuel pump was stuck	A
There is foreign matter or signs that fuel pump was stuck	B